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How does the phase-change GPU thermal pad contribute to the cooling efficiency of the RX 9070 XT


The phase-change GPU thermal pad used in the ASUS TUF Gaming Radeon RX 9070 XT contributes significantly to the cooling efficiency of the graphics card. Here's how it enhances performance:

1. Phase-Change Technology: The thermal pad is solid at room temperature but liquifies as it heats up, typically above 45°C (113°F). This phase change allows the pad to fill microscopic gaps between the GPU and the thermal module, ensuring superior thermal conductivity and enhanced heat dissipation[1][3].

2. Minimizing Pump-Out Effect: Traditional thermal pastes can be slowly pressed out over time due to the thermal expansion and contraction of materials like copper and silicon. The phase-change pad minimizes this "pump-out" effect, maintaining its effectiveness over a longer period compared to conventional pastes[1][9].

3. Longevity and Reliability: Phase-change thermal pads are designed to last longer than traditional thermal pastes, even under heavy workloads. This means that the RX 9070 XT can maintain optimal cooling performance without needing frequent repasting, contributing to the card's overall reliability and longevity[3][9].

4. Easy Application and Reusability: These pads are generally easy to apply and can be reused, making them convenient for maintenance and upgrades. However, they require a specific pressure range (300-400 N) for optimal performance[1][9].

5. Non-Conductive Properties: The phase-change pads are electrically non-conductive, ensuring safety when used on components without an integrated heat spreader (IHS), such as some mobile CPUs and GPUs[1][3].

Overall, the phase-change GPU thermal pad in the RX 9070 XT enhances cooling efficiency by providing consistent thermal conductivity, minimizing the pump-out effect, and offering long-term reliability, all of which are crucial for maintaining optimal performance under demanding conditions.

Citations:
[1] https://www.tomshardware.com/pc-components/thermal-paste/thermal-grizzly-new-thermal-pad-has-a-phase-changing-design
[2] https://www.trumonytechs.com/thermal-pad-uses/
[3] https://www.thefpsreview.com/2025/01/06/asus-details-amd-radeon-rx-9070-xt-and-radeon-rx-9070-graphics-cards-from-tuf-gaming-and-prime/
[4] https://www.zeusbtc.com/ASIC-Miner-Repair/Parts-Tools-Details.asp?ID=3091
[5] https://thermalpad.eu
[6] https://www.asus.com/motherboards-components/graphics-cards/tuf-gaming/tuf-rx7900xt-o20g-gaming/
[7] https://www.howtogeek.com/what-is-a-phase-change-thermal-pad-and-how-does-it-work/
[8] https://www.youtube.com/watch?v=6jOuqwojuWY
[9] https://www.thermal-grizzly.com/en/phasesheet-ptm/s-tg-ps-50-40
[10] https://www.youtube.com/watch?v=vdIIA57treo